写实风格白头鹰头部3D渲染提示词

{ "subject": { "description": "一只白头鹰的头部和上颈部，向上望向光源。", "count": 1, "orientation": "侧面，面朝左，陡峭向上倾斜", "pose_or_state": "静态，颈部伸展，头部向上看", "expression": "威严，中性" }, "scale_and_proportion": { "subject_to_frame_ratio": "主体约占画面的40%，位于中右位置", "proportions": "解剖学上准确的鹰头", "negative_space": "画面左侧和底部有大量留白" }, "composition": { "shot_type": "特写", "camera_angle": "低角度，向上看主体", "framing": "主体位于画面右半部分", "symmetry": "高度不对称", "background": "纯黑色，带有明显的对角体积光光线", "depth_of_field": "深景深，光线和被照亮的主体特征清晰对焦" }, "temporal_context": { "era": "当代数字艺术", "modern_elements": false, "retro_stylization": false, "trend_influence": false }, "style": { "visual_type": "3D渲染", "realism_level": "最大纹理真实感", "art_style": "无", "stylization": false, "interpretation": "仅字面再现" }, "lighting": { "setup_type": "体积光/轮廓光", "light_direction": "右上方向，光线向下射向左下", "light_quality": "硬体积光束（神光）", "contrast": "极高，明暗对比效果", "shadow_behavior": "深黑，绝对黑色阴影遮蔽主体下半部分", "color_temperature": "非常冷，单色深紫/紫色", "lighting_variation": "无" }, "materials": { "primary_materials": [ "羽毛", "角蛋白（喙）" ], "surface_finish": "哑光羽毛，半光泽喙", "light_reflection": "喙上曲线有锐利闪光，单个羽毛边缘有柔和高光", "material_accuracy": "精确" }, "color_palette": { "dominant_colors": [ "深紫色 (#32174d)", "黑色 (#000000)" ], "saturation": "紫色光束中高饱和度", "contrast_level": "最大", "color_shift": false }, "texture_and_detail": { "surface_detail": "仅在光线照射处可见精细的羽小枝和纹理", "grain_noise": "无，完美干净的数字渲染", "micro_details": "保留喙的纹理和被照亮羽毛的锐利边缘", "sharpness": "喙和头顶部对焦清晰" }, "camera_render_settings": { "lens_equivalent": "50mm", "perspective_distortion": "无", "aperture_look": "f/8（深景深）", "resolution": "高", "render_quality": "干净且中性" }, "constraints": { "no_additional_objects": true, "no_reframing": true, "no_crop": true, "no_stylization": true, "no_artistic_license": true, "no_text": true, "no_watermark": true, "no_effects": true, "no_dramatic_lighting": false, "no_color_grading": true }, "iteration_instruction": { "compare_to_reference": true, "fix_geometry_first": true, "then_fix_composition": true, "then_fix_lighting": true, "then_fix_color": true, "ignore_aesthetic_improvements": true }, "negative_prompt": [ "创意", "电影感", "艺术性", "风格化", "插画", "抽象", "戏剧化", "广角", "鱼眼", "夸张", "重新诠释", "额外元素", "现代化", "复古外观", "调色", "AI伪影", "暖色调", "可见背景元素" ] }